Religion in Norway is mostly Evangelical Lutheran Christianity, with 72.9% of the population officially belonging to the Evangelical Lutheran Church of Norway in 2015. The Catholic Church is the next largest Christian church at 2.4%. The officially unaffiliated make up 13.0% of the population.Islam is followed by 2.4% of the population, making it the largest non-Christian religion.
The Evangelical Lutheran Church has a privileged place in society, though less so since a constitutional change in 2012.
Early Norwegians, like all of the people of Scandinavia, were adherents of Norse paganism; the Sámi having a shamanistic religion. Norway was gradually Christianized by Christian missionaries between 1000 and 1150. Before the Protestant Reformation in 1536, Norwegians were part of the Catholic Church.
Norway has seen a great decline in religiosity and most Norwegians are irreligious. According to the Eurobarometer Poll of 2010:
Norse religion developed from the common mythology of the Germanic people. Scandinavian mythology and the relative importance of gods and heroes developed slowly. Thus, the cult of Odin in Norway probably spread from Western Germany not long before they were written down. Gods shown as minor gods such as Ullr, the fertility god Njord and Heimdall are likely to be older gods in Norway who lost popularity. Other gods (or aesir, as they were called) worth mentioning are the thunder-god Thor and the love-goddess Freya.